該成人預防保健服務檢查單之就診序號

病人幾乎總是被指定一個特定的數值型的唯一識別碼（identifier）

resource中資料項目的唯一ID（用於內部參照）。這可以是任何不含空格的字串。

擴充的資料項目

這個唯一識別碼（identifier）的用途

應用程式可以假定一個識別碼是永久的，除非它明確說它是暫時的。

允許從一組識別碼中為特定的使用情境選擇適當的識別碼

識別碼的代碼型別，用於決定特定目適用的識別碼。

這個資料項目只涉及識別碼的一般類別。它 必須沒有（SHALL NOT） 被用於與Identifier.system 1..1對應的代碼。一些識別碼可能由於常見的用法而屬於多個類別。在系統是已知的情況下，型別是不必要的，因為型別總是系統定義的一部分。然而，系統經常需要處理系統不為人知的識別碼。型別和系統之間不是1:1的關係，因為許多不同的系統有相同的型別。

允許使用者在不知道識別碼系統的情況下利用識別碼

resource中資料項目的唯一ID（用於內部參照），這可以是任何不含空格的字串。

建立值的命名空間－即一個描述一組值的唯一URL

Identifier.system總是區分大小寫

有許多識別碼的集合。為了進行兩個識別碼的對應，我們需要知道我們處理的是哪一組。系統指明了一個特定的唯一識別碼集。

識別碼中通常與使用者有關的部分，在系統情境內是唯一的。

如果此值是一個完整的URI，那麼此系統 必須（SHALL） 是urn:ietf:rfc:3986。此值的主要目的是為了可運算的對應。因此，為了比較的目的，它可能會被正規化（例如：去除不重要的空白、破折號等）。一個為人顯示的格式化的值可以使用Rendered Value擴充來傳達。除非對Identifier.system的了解使處理者確信不區分大小寫的處理是安全的，否則Identifier.value應被視為區分大小寫。

識別碼有效／曾經有效使用的時段或期間

簽發／管理識別碼的機構

Identifier.assigner可以省略.reference資料項目，只包含一個.display資料項目，反映指定機構的名稱或其他文字表述資訊。

成人預防保健就醫紀錄

建立時間

代檢機構與所屬醫事機構

問卷標題

• value @ title

A set of healthcare-related information that is assembled together into a single logical package that provides a single coherent statement of meaning, establishes its own context and that has clinical attestation with regard to who is making the statement. A Composition defines the structure and narrative content necessary for a document. However, a Composition alone does not constitute a document. Rather, the Composition must be the first entry in a Bundle where Bundle.type=document, and any other resources referenced from Composition must be included as subsequent entries in the Bundle (for example Patient, Practitioner, Encounter, etc.).

While the focus of this specification is on patient-specific clinical statements, this resource can also apply to other healthcare-related statements such as study protocol designs, healthcare invoices and other activities that are not necessarily patient-specific or clinical.

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

該成人預防保健服務檢查單之就診序號

A version-independent identifier for the Composition. This identifier stays constant as the composition is changed over time.

Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate.

病人幾乎總是被指定一個特定的數值型的唯一識別碼（identifier）

resource中資料項目的唯一ID（用於內部參照）。這可以是任何不含空格的字串。

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

擴充的資料項目

May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

• value @ url

這個唯一識別碼（identifier）的用途

The purpose of this identifier.

應用程式可以假定一個識別碼是永久的，除非它明確說它是暫時的。

Applications can assume that an identifier is permanent unless it explicitly says that it is temporary.

如果知道，請說明此識別碼的目的；應填入IdentifierUse代碼表中的其中一個代碼。

Identifies the purpose for this identifier, if known .

允許從一組識別碼中為特定的使用情境選擇適當的識別碼

Allows the appropriate identifier for a particular context of use to be selected from among a set of identifiers.

識別碼的代碼型別，用於決定特定目適用的識別碼。

A coded type for the identifier that can be used to determine which identifier to use for a specific purpose.

這個資料項目只涉及識別碼的一般類別。它 必須沒有（SHALL NOT） 被用於與Identifier.system 1..1對應的代碼。一些識別碼可能由於常見的用法而屬於多個類別。在系統是已知的情況下，型別是不必要的，因為型別總是系統定義的一部分。然而，系統經常需要處理系統不為人知的識別碼。型別和系統之間不是1:1的關係，因為許多不同的系統有相同的型別。

This element deals only with general categories of identifiers. It SHOULD not be used for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into multiple categories due to common usage. Where the system is known, a type is unnecessary because the type is always part of the system definition. However systems often need to handle identifiers where the system is not known. There is not a 1:1 relationship between type and system, since many different systems have the same type.

識別碼的型別，用於決定特定目的所適用的識別碼；應填入臺灣識別碼類型值集代碼表中適合的代碼，確定無適合的代碼才可以使用其他代碼中的代碼來表示。

A coded type for an identifier that can be used to determine which identifier to use for a specific purpose.

允許使用者在不知道識別碼系統的情況下利用識別碼

Allows users to make use of identifiers when the identifier system is not known.

resource中資料項目的唯一ID（用於內部參照），這可以是任何不含空格的字串。

Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

由專門術語系統（terminology system）所定義之代碼的參照

A reference to a code defined by a terminology system.

代碼可以在列舉清單（enumerations）或代碼清單（code lists）中非常隨意地定義，直至有非常正式的定義，例如：SNOMED CT—更多資訊見HL7 v3核心原則（Core Principles ）。編碼的排序是未定義的因而 必須沒有（SHALL NOT） 被用來推斷意義。一般來說，最多只有一個編碼值（coding values）會被標記為UserSelected = true。

Codes may be defined very casually in enumerations, or code lists, up to very formal definitions such as SNOMED CT - see the HL7 v3 Core Principles for more information. Ordering of codings is undefined and SHALL NOT be used to infer meaning. Generally, at most only one of the coding values will be labeled as UserSelected = true.

允許代碼系統中的替代編碼，以及翻譯到其他編碼系統。

Allows for alternative encodings within a code system, and translations to other code systems.

定義代碼中符號意義的代碼系統識別

The identification of the code system that defines the meaning of the symbol in the code.

URI可以是一個OID（urn:oid:...）或一個UUID（urn:uuid:...）；OID和UUID 必須(SHALL) 參照HL7 OID註冊中心；否則，URI應該來自HL7的FHIR定義的特殊URI列表，或者它應該參照一些明確建立的系统定義。

The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

需要明確說明符號定義的來源

Need to be unambiguous about the source of the definition of the symbol.

系統定義的語法之符號；符號可能是一個預先定義的代碼，也可能是代碼系統定義的語法中的表達式（如後組合配對／後組合式）。

A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination).

需要參照系統中的一個特定代碼

Need to refer to a particular code in the system.

遵循系統的規則以呈現代碼含義的表示法

A representation of the meaning of the code in the system, following the rules of the system.

需要能為不了解此系統的讀者呈現可讀的代碼含義

Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

輸入資料的使用者所見／所選／所說的人類可讀文字表述，和（或）其代表使用者的預期含義。

A human language representation of the concept as seen/selected/uttered by the user who entered the data and/or which represents the intended meaning of the user.

很多時候，此文字表述與其中一個代碼的顯示名稱相同。

Very often the text is the same as a displayName of one of the codings.

專門術語中的代碼並不總是能捕捉人類使用的細微差別的正確意義，或者根本就沒有合適的代碼；這些情況下，文字表述被用來捕捉來源的全部意義。

The codes from the terminologies do not always capture the correct meaning with all the nuances of the human using them, or sometimes there is no appropriate code at all. In these cases, the text is used to capture the full meaning of the source.

建立值的命名空間－即一個描述一組值的唯一URL

Establishes the namespace for the value - that is, a URL that describes a set values that are unique.

Identifier.system總是區分大小寫

Identifier.system is always case sensitive.

有許多識別碼的集合。為了進行兩個識別碼的對應，我們需要知道我們處理的是哪一組。系統指明了一個特定的唯一識別碼集。

There are many sets of identifiers. To perform matching of two identifiers, we need to know what set we're dealing with. The system identifies a particular set of unique identifiers.

識別碼中通常與使用者有關的部分，在系統情境內是唯一的。

The portion of the identifier typically relevant to the user and which is unique within the context of the system.

如果此值是一個完整的URI，那麼此系統 必須（SHALL） 是urn:ietf:rfc:3986。此值的主要目的是為了可運算的對應。因此，為了比較的目的，它可能會被正規化（例如：去除不重要的空白、破折號等）。一個為人顯示的格式化的值可以使用Rendered Value擴充來傳達。除非對Identifier.system的了解使處理者確信不區分大小寫的處理是安全的，否則Identifier.value應被視為區分大小寫。

If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986. The value's primary purpose is computational mapping. As a result, it may be normalized for comparison purposes (e.g. removing non-significant whitespace, dashes, etc.) A value formatted for human display can be conveyed using the Rendered Value extension. Identifier.value is to be treated as case sensitive unless knowledge of the Identifier.system allows the processer to be confident that non-case-sensitive processing is safe.

識別碼有效／曾經有效使用的時段或期間

Time period during which identifier is/was valid for use.

簽發／管理識別碼的機構

Organization that issued/manages the identifier.

Identifier.assigner可以省略.reference資料項目，只包含一個.display資料項目，反映指定機構的名稱或其他文字表述資訊。

The Identifier.assigner may omit the .reference element and only contain a .display element reflecting the name or other textual information about the assigning organization.

The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document.

If a composition is marked as withdrawn, the compositions/documents in the series, or data from the composition or document series, should never be displayed to a user without being clearly marked as untrustworthy. The flag "entered-in-error" is why this element is labeled as a modifier of other elements.

Some reporting work flows require that the original narrative of a final document never be altered; instead, only new narrative can be added. The composition resource has no explicit status for explicitly noting whether this business rule is in effect. This would be handled by an extension if required.

The workflow/clinical status of the composition.

Need to be able to mark interim, amended, or withdrawn compositions or documents.

Specifies the particular kind of composition (e.g. History and Physical, Discharge Summary, Progress Note). This usually equates to the purpose of making the composition.

For Composition type, LOINC is ubiquitous and strongly endorsed by HL7. Most implementation guides will require a specific LOINC code, or use LOINC as an extensible binding.

Type of a composition.

Key metadata element describing the composition, used in searching/filtering.

Who or what the composition is about. The composition can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of livestock, or a set of patients that share a common exposure).

For clinical documents, this is usually the patient.

Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about.

成人預防保健就醫紀錄

Describes the clinical encounter or type of care this documentation is associated with.

Provides context for the composition and supports searching.

建立時間

The composition editing time, when the composition was last logically changed by the author.

The Last Modified Date on the composition may be after the date of the document was attested without being changed.

dateTime is used for tracking, organizing versions and searching. Note that this is the time of authoring. When packaged in a document, Bundle.timestamp is the date of packaging.

代檢機構與所屬醫事機構

Identifies who is responsible for the information in the composition, not necessarily who typed it in.

Identifies who is responsible for the content.

問卷標題

Official human-readable label for the composition.

For many compositions, the title is the same as the text or a display name of Composition.type (e.g. a "consultation" or "progress note"). Note that CDA does not make title mandatory, but there are no known cases where it is useful for title to be omitted, so it is mandatory here. Feedback on this requirement is welcome during the trial use period.

The root of the sections that make up the composition.

• value @ title

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The root of the sections that make up the composition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

The root of the sections that make up the composition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

The root of the sections that make up the composition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

The root of the sections that make up the composition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

The root of the sections that make up the composition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

The root of the sections that make up the composition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.

The root of the sections that make up the composition.

May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

The label for this particular section. This will be part of the rendered content for the document, and is often used to build a table of contents.

The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title, or documents that only have a single section. Most Implementation Guides will make section title to be a required element.

Section headings are often standardized for different types of documents. They give guidance to humans on how the document is organized.